I also intend to change the wires to dyneema.
After checking the gearbox I can not see why it is not possible without this expensive Simpson „dyneema“ set.
What do you needed the 100 Euros for?
4mm Dyneema is not that expensive :-)
Did you use dyneema with a polyester cover or without protection?
Did you do any changings on the gearbox/ motor?
A54 #119 Lady Charlyette, currently Azores, Santa Maria